Title:
Evaluating the Eco-Mechanical Performances of Fiber-Reinforced Concrete
Author(s):
Alessandro P. Fantilli, and Bernardino Chiaia
Publication:
Symposium Paper
Volume:
299
Issue:
Appears on pages(s):
1-12
Keywords:
Fiber-reinforced concrete, Mechanical performances, Ecological performances, Tensile strength, Flexural strength, Work of fracture, Crack width
DOI:
10.14359/51688016
Date:
1/1/2015
Abstract:
A comparison among different structural concretes is herein performed in order to select, or tailor, new eco-friendly
and high performance cement-based composites. The ecological impact and the mechanical behavior of reinforced
concrete (RC) ties and beams are both assessed by of means the so-called eco-mechanical index (EMI). The crack width of RC structures, the embodied energy and the carbon dioxide released by the production of concretes, are the main parameters of EMI. As a result, the best eco-mechanical performances can be easily achieved by using a normal strength cementitiuos concrete having high fracture toughness (i.e., by adding steel fibers to normal strength concrete). Moreover, in an eco-mechanical analysis, the work of fracture, either in tension or in bending, is sufficient to define the mechanical performances and durability of normal and high-strength of RC structures, without measuring crack width.